<template>
  <div>
    <!-- 三级分类全局组件 -->
    <Category :scene="scene"></Category>

    <el-card style="margin: 10px 0px">
      <div v-show="scene == 0">
        <el-button
          @click="addAttr"
          type="primary"
          size="default"
          icon="Plus"
          :disabled="categoryStore.c3Id ? false : true"
          >添加属性</el-button
        >
        <el-table border style="margin: 10px 0px" :data="attrArr">
          <el-table-column
            label="序号"
            type="index"
            align="center"
            width="80px"
          ></el-table-column>
          <el-table-column
            label="属性名称"
            width="120px"
            prop="attrName"
          ></el-table-column>
          <el-table-column label="属性值名称">
            <template #="{ row, $index }">
              <el-tag
                style="margin: 5px"
                v-for="(item, index) in row.attrValueList"
                :key="item.id"
                >{{ item.valueName }}</el-tag
              >
            </template>
          </el-table-column>
          <el-table-column label="操作" width="120px">
            <template #="{ row, $index }">
              <el-button
                type="primary"
                size="small"
                icon="Edit"
                @click="updateAttr(row)"
              ></el-button>

              <el-popconfirm
                :title="`你确定要删除${row.attrName}`"
                width="200px"
                @confirm="deleteAttr(row.id)"
              >
                <template #reference>
                  <el-button
                    type="primary"
                    size="small"
                    icon="Delete"
                  ></el-button>
                </template>
              </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
      </div>

      <div v-show="scene == 1">
        <!-- 展示添加属性与修改数据的结构 -->
        <el-form :inline="true">
          <el-form-item label="属性名称">
            <el-input
              placeholder="请输入属性名称"
              v-model="attrParams.attrName"
            ></el-input>
          </el-form-item>
        </el-form>

        <el-button
          @click="addAttrValue"
          :disabled="attrParams.attrName ? false : true"
          type="primary"
          size="default"
          icon="Plus"
          >添加属性值</el-button
        >
        <el-button type="primary" size="default" @click="cancel"
          >取消</el-button
        >

        <el-table
          border
          style="margin: 10px 0px"
          :data="attrParams.attrValueList"
        >
          <el-table-column
            label="序号"
            width="80px"
            type="index"
            align="center"
          ></el-table-column>
          <el-table-column label="属性值名称">
            <!-- row:即为当前属性值对象 -->
            <template #="{ row, $index }">
              <el-input
                :ref="(vc: any) => (inputArr[$index] = vc)"
                size="small"
                v-if="row.flag"
                @blur="toLook(row, $index)"
                placeholder="请你输入属性值名称"
                v-model="row.valueName"
              ></el-input>
              <div v-else @click="toEdit(row, $index)">{{ row.valueName }}</div>
            </template>
          </el-table-column>
          <el-table-column label="属性值操作">
            <template #="{ row, $index }">
              <el-button
                type="primary"
                size="small"
                icon="Delete"
                @click="attrParams.attrValueList.splice($index, 1)"
              ></el-button>
            </template>
          </el-table-column>
        </el-table>

        <el-button
          type="primary"
          size="default"
          icon="Plus"
          @click="save"
          :disabled="attrParams.attrValueList.length > 0 ? false : true"
          >保存</el-button
        >
        <el-button type="primary" size="default" @click="cancel"
          >取消</el-button
        >
      </div>
    </el-card>
  </div>
</template>

<script setup lang="ts">
// 组合式API函数watch
import { watch, ref, reactive, nextTick, onBeforeMount } from "vue";
// 获取已有属性与属性值接口
import { reqAttr, reqAddOrUpdateAttr, reqRemoveAttr } from "@/api/product/attr";
// 数据类型
import type {
  AttrResponseData,
  Attr,
  AttrValue,
} from "@/api/product/attr/type";

// 获取分类的仓库
import useCategoryStore from "@/store/modules/category";
import { ElMessage } from "element-plus";
let categoryStore = useCategoryStore();

// 存储已有的属性与属性值
let attrArr = ref<Attr[]>([]);
// 定义card组件内容切换变量
let scene = ref<number>(0);
// 定义一个响应式数据控制编辑摸索和查看模式的切换
// let flag = ref<boolean>(true);

//  收集新增的属性的数据
let attrParams = reactive<Attr>({
  attrName: "", //新增的属性的名字
  attrValueList: [], //新增的属性值数组
  categoryId: "", //三级分类的ID
  categoryLevel: 3, //代表的是三级分类
});

// 准备一个数组,将来存储对应的组件el-input
let inputArr = ref<any>([]);

// 监听仓库三级分类ID变化
watch(
  () => categoryStore.c3Id,
  () => {
    attrArr.value = [];
    // 保证三级分类的有才能发送请求
    if (!categoryStore.c3Id) return;
    getAttr();
  },
);

//获取已有的属性与属性值的方法
const getAttr = async () => {
  //获取分类的ID
  const { c1Id, c2Id, c3Id } = categoryStore;
  let result: AttrResponseData = await reqAttr(c1Id, c2Id, c3Id);
  if (result.code == 200) {
    attrArr.value = result.data;
  }
};
// 添加属性的方法
const addAttr = () => {
  // 每次点击的时候,先清空一下数据再收集数据
  Object.assign(attrParams, {
    attrName: "",
    attrValueList: [],
    categoryId: categoryStore.c3Id,
    catrgoryLevel: 3,
  });

  scene.value = 1;
  // 点击这个按钮的时候收集新增属性的三级分类的ID
  // attrParams.categoryId = categoryStore.c3Id;
};

// table 表格修改已有属性按钮的回调
const updateAttr = (row: Attr) => {
  console.log(row, "");
  scene.value = 1;
  // 将已有的属性对象赋值给attrParams对象即为
  // ES6->object.assign进行对象的合并
  Object.assign(attrParams, JSON.parse(JSON.stringify(row)));
};

// 取消按钮的回调
const cancel = () => {
  scene.value = 0;
};

// 添加属性值的方法
const addAttrValue = () => {
  //  点击添加属性值按钮的时候,向数组添加一个属性值对象
  attrParams.attrValueList.push({
    valueName: "",
    flag: true, //控制每一个属性值的编辑模式与切换模式的切换
  });

  // 获取最后el-input组件聚焦
  nextTick(() => {
    inputArr.value[attrParams.attrValueList.length - 1].focus();
  });
};

// 保存按钮的回调
const save = async () => {
  // 收集参数
  // 发请求

  let result: any = await reqAddOrUpdateAttr(attrParams);
  // 添加属性|修改已有的属性已经成功
  if (result.code == 200) {
    // 切换场景
    scene.value = 0;
    // 提示信息
    ElMessage({
      type: "success",
      message: attrParams.id ? "修改成功" : "添加成功",
    });
    // 获取全部已有的属性与属性值
    getAttr();
  } else {
    ElMessage({
      type: "error",
      message: attrParams.id ? "修改失败" : "添加失败",
    });
  }
  console.log(result);
};

// 属性值表单元素失去焦点
const toLook = (row: AttrValue, $index: number) => {
  // 非法情况的判断
  if (row.valueName.trim() == "") {
    // 删除调用对应属性值为空的元素
    attrParams.attrValueList.splice($index, 1);

    // 提示信息
    ElMessage({
      type: "error",
      message: "属性值不能为空",
    });
    return;
  }

  // 不能相同的属性值
  let repeat = attrParams.attrValueList.find((item) => {
    if (item !== row) {
      return item.valueName == row.valueName;
    }
  });

  if (repeat) {
    ElMessage({
      type: "error",
      message: "属性值不能重复",
    });
    return;
  }

  row.flag = false;
};
// 编辑模式
const toEdit = (row: AttrValue, $index: number) => {
  row.flag = true;

  // nextTick:响应式数据发送变化,获取更新的DOM,组件实列
  nextTick(() => {
    inputArr.value[$index].focus();
  });
};

// 删除某一个已有的属性方法回调
const deleteAttr = async (attrId: number) => {
  // 发相应的删除已有的属性的请求
  let result: any = await reqRemoveAttr(attrId);
  if (result.code == 200) {
    ElMessage({
      type: "success",
      message: "删除成功",
    });
    getAttr();
  } else {
    ElMessage({
      type: "error",
      message: "删除失败",
    });
  }
};

// 当路由组件销毁的时候,把仓库分类相关的数据清空
onBeforeMount(() => {
  // 清空分类仓库的数据
  categoryStore.$reset();
});
</script>

<style scoped lang="scss"></style>
